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Quantum GravityThird Edition$
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Claus Kiefer

Print publication date: 2012

Print ISBN-13: 9780199585205

Published to Oxford Scholarship Online: May 2012

DOI: 10.1093/acprof:oso/9780199585205.001.0001

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Phenomenology, decoherence, and the arrow of time

Phenomenology, decoherence, and the arrow of time

(p.329) 10 Phenomenology, decoherence, and the arrow of time
Quantum Gravity

Claus Kiefer

Oxford University Press

This final chapter starts with a brief review of quantum-gravity phenomenology. It then focuses on an important conceptual issue – the relevance of quantum gravity for the general interpretation of quantum theory. A central part is devoted to the discussion of the quantum-to-classical transition, with decoherence as its crucial mechanism. It is shown that the quantum states used in cosmology can be interpreted in a sensible way. The chapter also contains a discussion of the arrow of time in the light of quantum cosmology and ends with a brief outlook and reflections.

Keywords:   Quantum-gravity phenomenology, interpretation, quantum universe, decoherence, Everett interpretation, primordial fluctuations, arrow of time, reflections

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